Clapboard-sawing machine



I D. B. GARY GLAPBOARD SAWING MACHINE 2 sheets-sheet 1 Filed Sep 1925 gwln'ntop Jan, 5, 1925 1,521,763

1 D. B. GARY I CLAPBOARD SAWING momma v Filed Sept. 'v, 1925 2 snwia-sn'eet 2 Patented Janr5, 1925.

DAVID B. GARY, or EVERETT, WASHINGTON, AssIenoR or ONE-riser 'IO HARRY Lj GARY, OF EVERETT,

' OLAPIBOARD-SAWING Macrame.-

Application filed September To all whom it may concern; Be it known that I, DAVIDB. GARY, a citiresident of the city of Everett, in the county of Snohomish and State of NVashington,

have invented certain new and useful Improvements in Clapboard-Sawing Machines, of which the following-is a speci- My invention relates to machines designed for sawing bevel-edged lumber, and

particularly bevel-edged lumber of the kind referred to as clapboards.

1 The object of my invention is toprovide a simple device which will saw this type of lumber, and one which may be operated so as to distribute the thick and thin sides of the lumber as cut at opposite sides of the cant in any relation desired, thereby to eiiiciently use up all the lumber'in the cant without wastage.

The features of my invention upon which I desire to secure a patent will first be described hereinafter, and then be particularly defined in the claim.

The accompanying drawings show my machine in the form of construction which I am now using.

Figure 1 is a top or plan view of the ma- .m chine. I

Figure 2 is a transverse sectional elevation, taken substantially upon the plane of the line 2-2 of Figure 1.

Figure 3 illustrates the adjustable stop the log so that the clapboards when sawed i transversely of the cant will be vertical grained. In sawing the cants out of the log, while two opposite sides would be parallel, the other two sides will not be parallel with each other, but will be somewhat tapered, making the cant of less widthat one side than at the other. Such cants are placed in a reciprocating carriage and clapboards sawed therefrom one at a time, the cant being tilted in opposite directions as mechanism by which the throw of the tilt-,

7, "192a s ri uo. 661,421.

may be necessary to suitably cut up the cant. zen of the United States of America, and

In. the drawings, .1 represents a frame -which may be of any suitable character of .const-ruction which'adapts it to the purpose. This frame has guideways lO'extending lengthwise thereof, in which is slidably mounted a carriage 2 upon which or to which is secured the cant while it; is A being sawed. A saw 3 ismounted in hori-, iv

zontal position below the path of movement of the carriage so that asthecarriage'passes over the sawafclapboard will be cut from the lower edge of the cant. To permitj'of this type of cutting, dogs are employed; for

engaging the ends of the cants to hold them in place. The carriage 2 s provided with .an opening 20 adapted to receive one of the cants. This is ofa width somewhat greater than the width of the cantand a 4 length 'sufiicientto accommodate the length of the cants' and the dogs by which itis the carriage is provided with two depending plates 21, whichat'their lower edges are inclined towards the center of the open.-

ing. The lower. edges :of'these plates are separated a width corresponding as exactly as feasible with the width of the cant used, but not close enough together but. thatthe cant may freely dropbetwe'en these edges when it isreleased .from'the dogs. lhe

adjustment may be easily madefor vary ing lengths of can ts. Such nieans'as: il-

lust-rated consist of a the threaded bar 42 til engaged. The cant-receiving opening in I which is screwed into amember of: the an riage and which may be-turned as by a crank 43. The other holding dog, 44,- is similarly mounted in guideways and is resiliently held in engagement with the other-end of the, cant C, as by a spring 45 securedbv I one end to the dog and by the other end to some portion of the carriage. Means are provided by which this latter dog may be automatically Withdrawn so as to re lease the cant at the completion of the return movement of the carriage so that the.

rocated, of

riage withdraw the dog 'tion, is the tilting table.

' clapboard just" sawed.

cant may be dropped upon the tilting table. As illustrated such means consist of the bell crank lever pivoted at upon the carand connected by a link 51 with the and a'cam stop 52 which is mounted upon the main frame 1 in position to be engaged by one end of the bell crank lever to throw it in the direction necessary to a l from engagement with the end of the cant.

Mounted in fixed position beneath the cant-receiving opening and the cant when the carriage is in its fully withdrawn posi- As illustrated this consists of a rod 6 which extends lengthwise of the carriage and is pivoted so as to be rocked upon its axis, and bars secured to said rod 6 and extending transversely thereof to form a support for the cant. Longitudinally extending rods 61 may be employed, carried by said transverse bar 60 and forming a smoother surface for engagement of the bottom edge of'the cant. This tilting table is located at such a level with relation to the'level of the saw 3 that a portion of the cant will be cut from the bot tom side thereof when the carriage is recipsuch thickness as to form one This is shown at the point 30 dog,

clapboard.

in Figure 2. g

, After a clapboard has been sawed from the cant it is desirable that the position of the cant be dropped'in the opposite direction so that the thick edge ofthe clapboard next sawed will be positioned at the opposite side of the cant from that occupied by the tilting table is rocked through a slight angle. The means for doing this as illustrated consist of a'leve'r 62-which is secured to the tilting table and which is engaged by a second lever 63 pivoted by one end upon the frame. This lever is preferably so mounted that it is to a limited extent resilient or may be bent in a direction perpendicular to the plane of its swing. It is also preferably provided with a roller, as 64, which engages with a cam projection 65 carried by the frame so that the swinging of the lever to the full" extent of its movement may be assured. After the lever is swung enough 'to pass over tlfe tip of the cam projection 65, the spring action of the lever 68 pressing the rollerfia against the inclined'slope, will tend to throw it up or down as the case may be, until it contacts with the adjustable stop bolts 7, which bolts are mounted in a' retaining baror chp 70. By adjustment of these bolts the amount of throw. of the To secure this, the

lever, and therefore the amount of tilt given the table, may be quickly and veryaccurately adjusted.

The saw shaft 31 is connected with a shaft 8 at one end of the frame, by means of a quarter turn belt 80. This shaft is connected by means of pulleys 81 and 82, and corresponding belts 83 and 84: with pulleys carried by a shaft 9 located at the opposite end of the frame. This shaft has a tight and a loose pulley for each of the bolts 83 and 8%. A belt shifter 85 is operated through a bell crank lever 86 and the latter is operated by pins or stops as 87 and 88 carried either by the carriage itself or by an extension bar secured to the carriage. The shaft 9 is connected by the pair of gears 90 with a shaft 91 which has thereon a. pinion 92 meshing with a rack bar 93 which is secured to the carriage. The reciprocation of the cauriage is therefore secured throughthe action of the pinion 92 upon the rack bar 93, and the direction of movement is controlled by the reversing mechanism described. The pins 88 and 87, contacting with one arm of the lever 86 as the carriage reaches the limits of its travel in opposite direction reverses the shaft 91, and therefore reverses the direction of travel of thecarriage. Any other suitable reversing means may be employed.

The clapboard as cut from the cant drops upon a belt 95 which carries it clear of the machine.

What I claim as my invention is:

A; clapboard sawing machine comprising a horizontally mounted saw, a carriage mounted to reciprocate overthe saw and having a cant-holding opening, cant holding dogs at the end of said openings, said dogs at one end being yieldingly held against the end of the cant, a stop automatically withdrawing said latter dog at the end of the return stroke of the carriage, a rod journaled to extend under and lengthwise of the cantholding opening of the carriage when it is withdrawn, bars mounted transversely of the said rod and adapted to receive and support the cant when dropped, a hand operated lever connected withsaid rod to turn it and f having a limited resiliency perpendicular to the plane of its swing, and'a cam-like projection engaged by said lever to act with the resilient action of the lever to insure a full throw of the lever.

' Signed at Everett, Snohomish County,

'lvashington, this 24th day of August, 1923.

DAVID is. char. 

